diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2024-02-03 11:45:21 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-02-16 14:30:17 +0100 |
| commit | 3a74f44de2c901e1536d227d29257cae1a6ed18f (patch) | |
| tree | 3ddf7dc168688604eca4d9dfa146fca65f7bb9d2 /arch/s390/kernel/os_info.c | |
| parent | 4ce69fcf17d067112f754414aa563e0cd74cc49d (diff) | |
s390/checksum: provide and use cksm() inline assembly
Convert those callers of csum_partial() to use the cksm instruction,
which are either very early or in critical paths, like panic/dump, so
they don't have to rely on a working kernel infrastructure, which will
be introduced with a subsequent patch.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/os_info.c')
| -rw-r--r-- | arch/s390/kernel/os_info.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c index 6e1824141b29..a801e6bd5341 100644 --- a/arch/s390/kernel/os_info.c +++ b/arch/s390/kernel/os_info.c @@ -29,7 +29,7 @@ static struct os_info os_info __page_aligned_data; u32 os_info_csum(struct os_info *os_info) { int size = sizeof(*os_info) - offsetof(struct os_info, version_major); - return (__force u32)csum_partial(&os_info->version_major, size, 0); + return (__force u32)cksm(&os_info->version_major, size, 0); } /* @@ -49,7 +49,7 @@ void os_info_entry_add(int nr, void *ptr, u64 size) { os_info.entry[nr].addr = __pa(ptr); os_info.entry[nr].size = size; - os_info.entry[nr].csum = (__force u32)csum_partial(ptr, size, 0); + os_info.entry[nr].csum = (__force u32)cksm(ptr, size, 0); os_info.csum = os_info_csum(&os_info); } @@ -98,7 +98,7 @@ static void os_info_old_alloc(int nr, int align) msg = "copy failed"; goto fail_free; } - csum = (__force u32)csum_partial(buf_align, size, 0); + csum = (__force u32)cksm(buf_align, size, 0); if (csum != os_info_old->entry[nr].csum) { msg = "checksum failed"; goto fail_free; |